ixgbe: Properly display 1 gig downshift warning for backplane

Description: When using Intel smartspeed, the patch displays a
warning when the link down shifts to 1 Gig.

Signed-off-by: Anjali Singhai <anjali.singhai@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/net/ixgbe/ixgbe_82599.c b/drivers/net/ixgbe/ixgbe_82599.c
index d189ba7e8f15..38c384031c4c 100644
--- a/drivers/net/ixgbe/ixgbe_82599.c
+++ b/drivers/net/ixgbe/ixgbe_82599.c
@@ -642,6 +642,7 @@ static s32 ixgbe_setup_mac_link_smartspeed(struct ixgbe_hw *hw,
         s32 i, j;
         bool link_up = false;
         u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
+        struct ixgbe_adapter *adapter = hw->back;
 
         hw_dbg(hw, "ixgbe_setup_mac_link_smartspeed.\n");
 
@@ -726,6 +727,10 @@ static s32 ixgbe_setup_mac_link_smartspeed(struct ixgbe_hw *hw,
                                             autoneg_wait_to_complete);
 
 out:
+        if (link_up && (link_speed == IXGBE_LINK_SPEED_1GB_FULL))
+                netif_info(adapter, hw, adapter->netdev, "Smartspeed has"
+                        " downgraded the link speed from the maximum"
+                        " advertised\n");
         return status;
 }